Car-door



J. MILLER.

GAR DOOR.

' No; 460,309. Patented Sept. 29,1891.

LJzZ/wmm/ WW m/Q/ UNITED STATES- PATENT OFFICE.

JAMES MILLER, OF DETROIT, MICHIGAN.

C A R D O O R.

SPECIFICATION forming part of Letters Patent No. 460,309, dated September 29, 1891. Application filed July 23, 1890. Serial No. 359,692. (No model.)

To all whom it may concern.-

Be it known that I, JAMES MILLER, a citizen of the United States, residing at Detroit, in the county of \Vayne and State of Michigan, have invented certain new and useful Improvements in Oar-Doors, of which the following is a specification, reference being had therein to the accompanying drawings.

This invention relates to new and useful improvements in car-doors; and the invention consists in the peculiar construction, arrange ment, and combination of the various parts, all as more fully hereinafter described.

In the accompanying drawings, Figure 1 is an elevation of my door from the outside. Fig. 2 is an elevation of my door from the inside. Fig. 3 is a vertical cross-section showing the door in its closed position. Fig. at is a vertical cross-section showing the door in its open position.

In the prior state of the art car-doors have been made in two parts, adapted to be lifted and secured at the roof of the car, as shown, for instance, in my previous patent, No. 419,057; butin such previous constructions the operator in opening the door has been obliged to first lift the lower part bodily and then support almost the entire weight of the doors, or handle them separately in securing them to the roof.

A is the door-frame, and B is the roof of a car to which my door is shown attached. The door consists of two parts C D, hinged together centrally by the hinges E, the lower edge of the lower door adapted to move outward in turning upon the hinge and being prevented from moving inward by the cleats or strips F, bearing against the inside of the part D. Both parts of the door are suspended from above by the hinges G, secured to the door-frame at or near the roof.

II is an aperture between the car-roof and the top of the upper part of the door, forming means for ventilation.

I is an auxiliary door opening inward, suspended from the hingesJ in the part0 of the door, locked by means of the lock K. The

two parts of the main door are locked in position by a lock L, having bolts adapted to engage with the frame at both sides, and a single operating-lever for moving the bolts.

can move only outwardly.

The upper part of the door bears against the inside of the frame and can turn on its hinges only by moving inward. The lower part of the door bears against the strips F and The upper part cannot be moved until the lower part is lifted, and both parts are securely locked by simply locking the lower part.

In unloading grain, as soon as the lower door is unlocked, the weight of the grain will force open the lower door and allow the grain to spout into the elevator-chute. The lower part being lifted and turned upon its hinge, it is secured to the upper part by any suitable means, such as the hook M. It is evident, in lifting this lower part, that at least half its weight will be carried by the hinge, and when secured to the upper part that both doors will be suspended from the upper'hinges. The two parts may easily be turned inward parallel with the roof, Where they may be secured by means of the hook T.

In lifting the two doors it is comparatively easy, as they are both suspended from the hinge, which will sustain the greater part of the weight.

If it is desired to enter the car when the doors are closed, the auxiliary door I may be used.

l/Vhat I claim as my invention is In a car, the combination, with the doorframe having inside cleats at the lower parts of the sides, of a door formed of two like parts, hinged together at their meeting edges so that the lower part may swing out, a lock on the lower part, a hinged connection between the upper part and roof of the car,wherebythe door is supported from the roof, a hook secured to the roof for engaging the inner edges of the folded parts of the door, and a hook in the top for engaging the outer or lower edge of the lower part, substantially as described.

In testimonywhereof I affix my signature in presence of two witnesses.

N. L. LINDoP, L. J. WHITTEMORE. 

